CN209897282U - A remote monitoring device based on OBD - Google Patents

Abstract

The present application discloses an OBD-based remote monitoring device, comprising: an acquisition module connected to an OBD interface of a vehicle; a main processor connected to the acquisition module; a terminal connected to the main processor; and a power management device connected to the main processor module. The application obtains the battery voltage of the vehicle through the acquisition module, the main processor generates a corresponding trigger command according to the size of the battery voltage, and the power management module controls the corresponding function module to turn off after receiving the trigger command, so that the remote monitoring device provided by the application can be turned off. Running in a low power consumption mode can prevent the battery from being fed due to the vehicle not being started for a long time, thereby causing the vehicle to fail to start, improving the reliability and safety of the remote monitoring device.

Description

A remote monitoring device based on OBD

technical field

The present application relates to the field of Internet of Vehicles, and in particular, to an OBD-based remote monitoring device.

Background technique

The OBD (On-Board Diagnostics, On-Board Diagnostics) system of an automobile refers to an on-board self-diagnosis system, which can obtain the OBD information of the automobile through various sensors set in the automobile, which provides a lot of convenience for the fault diagnosis, detection and maintenance of the automobile. Existing OBD-based remote monitoring systems generally include an OBD interface module, an MCU (Microcontroller Unit) module, a GPRS (General Packet Radio Service, General Packet Radio Service) module, and an Internet network module. , the various functional modules in the remote monitoring system are also running, and the power consumption is high, which may cause the battery to be fed, causing the vehicle to fail to start normally.

Therefore, how to provide a solution to the above technical problem is a problem that those skilled in the art need to solve at present.

SUMMARY OF THE INVENTION

The purpose of the present application is to provide an OBD-based remote monitoring device, which operates in a low power consumption mode when the vehicle is not started, so as to prevent the vehicle from being unable to start due to battery feeding caused by the vehicle not being started for a long time. High reliability and security.

In order to solve the above-mentioned technical problems, the application provides an OBD-based remote monitoring device, including:

an acquisition module connected to the OBD interface of the vehicle for acquiring the OBD information of the vehicle, wherein the OBD information includes the battery voltage;

a main processor connected with the acquisition module, used for sending the OBD information to the terminal through the GPRS module, and also used for generating a corresponding trigger instruction according to the battery voltage;

the terminal connected to the main processor for diagnosing the state of the vehicle according to the OBD information;

A power management module connected to the main processor and configured to control the shutdown of the corresponding function module after receiving the trigger instruction.

Preferably, the remote monitoring device further includes:

A GPS module connected to the main processor for acquiring GPS positioning data.

Preferably, the remote monitoring device further includes:

a Bluetooth module connected to the main processor and the FM module respectively;

The FM modules are respectively connected with the main processor and the vehicle audio system.

Preferably, the remote monitoring device further includes:

A vibration module connected to the main processor is used to collect vibration data of the vehicle after the vehicle is parked.

Preferably, the remote monitoring device further includes:

A display for displaying diagnostic results, the OBD information, and the GPS positioning data.

Preferably, the terminal includes a background server and/or a mobile terminal.

Preferably, the main processor is connected with the Bluetooth module, the acquisition module, the GPRS module, and the GPS module through UART;

The main processor is connected to the FM module and the vibration module through I2C.

Preferably, the main processor includes STM32F105VCT6.

Preferably, the vibration module includes an LSM303 chip.

Preferably, the FM module includes a PAM8908 chip and a QN8027 chip connected to the PAM8908 chip.

The present application provides an OBD-based remote monitoring device, comprising: an acquisition module connected to an OBD interface of a vehicle and used to acquire OBD information of the vehicle, wherein the OBD information includes battery voltage; The information is sent to the terminal through the GPRS module, and the main processor is also used to generate corresponding trigger commands according to the battery voltage; the terminal is connected to the main processor and used for diagnosing the state of the vehicle according to the OBD information; and the main processor Connect to the power management module used to control the shutdown of the corresponding function module after receiving the trigger instruction.

It can be seen that in practical applications, the solution of the present application is adopted, the battery voltage of the vehicle is obtained through the acquisition module, the main processor generates the corresponding trigger command according to the size of the battery voltage, and the power management module controls the corresponding function module after receiving the trigger command. Turn off, so that the remote monitoring device provided by this application operates in a low power consumption mode, which can prevent the battery from feeding power due to the vehicle not being started for a long time, thereby causing the vehicle to fail to start, and improve the reliability and safety of the remote monitoring device. sex.

Description of drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are For some embodiments of the present invention, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

Fig. 1 is the structural representation of a kind of OBD-based remote monitoring device provided by this application;

FIG. 2 is a schematic structural diagram of another OBD-based remote monitoring device provided by the present application.

Detailed ways

The core of the present application is to provide an OBD-based remote monitoring device, which operates in a low power consumption mode when the vehicle is not started, so as to prevent battery feeding due to the vehicle not being started for a long time, thereby causing the vehicle to fail to start. High reliability and security.

In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

Please refer to FIG. 1. FIG. 1 is a schematic structural diagram of an OBD-based remote monitoring device provided by the application, including:

an acquisition module 1 connected to the OBD interface of the vehicle and used for acquiring the OBD information of the vehicle, wherein the OBD information includes the battery voltage;

Specifically, the acquisition module 1 is connected to the OBD interface of the vehicle in order to obtain the OBD information of the vehicle, wherein the OBD information includes the vehicle speed, engine revolutions, accelerator opening, engine load, fuel correction, intake pipe pressure, and fault light on Relevant body parameters such as distance traveled, vehicle startup, and flameout time. The acquisition module 1 includes an OBD interface communication chip with a model of PIC18F2480. Of course, in addition to the OBD interface communication chip of the above type, OBD interface communication chips such as ELM327, QBD61TDA61, ET7190, PIC18F25K80 can also be selected, which are not limited in this application.

A main processor 2 connected to the acquisition module 1, used for sending the OBD information to the terminal 3 through the GPRS module, and also used for generating a corresponding trigger command according to the battery voltage;

As a preferred embodiment, the main processor 2 includes STM32F105VCT6.

Specifically, the main processor 2 in this application can use a 32-bit microcontroller STM32F105VCT6 based on an ARM Cortex-M core, and the controller can be ST's STM32 series processors, NXP's Kinetis series processors, and microchip's SAM series Any 32-bit microcontroller based on an ARM Cortex-M core, such as a processor. The GPRS module may include a SIM800c chip, and the SIM800c chip may also be replaced by chips such as SIM900, AIR202, and e16.

Specifically, the main processor 2 is connected to the acquisition module 1 and the GPRS module through a UART (Universal Asynchronous Receiver/Transmitter), so that the main processor 2 sends the OBD information collected by the acquisition module 1 to the GPRS module. Terminal 3, the terminal 3 analyzes and diagnoses the state of the vehicle according to the OBD information. It can be understood that the OBD information also includes the battery voltage, and the main processor 2 can generate a corresponding trigger command according to the battery voltage. For example, when the battery voltage is less than the first preset value, the main processor 2 generates a first trigger command to turn off. For some functional modules, if the battery voltage is less than the second preset value, the main processor 2 generates a second trigger instruction to close all functional modules, where the functional modules refer to each module in the remote monitoring device, and the first preset value is greater than second preset value.

The terminal 3 connected with the main processor 2 is used for diagnosing the state of the vehicle according to the OBD information;

As a preferred embodiment, the terminal 3 includes a background server and/or a mobile terminal 3 .

Specifically, the terminal 3 is connected to the main processor 2 through the GPRS module, so as to receive the OBD information sent by the main processor 2, and perform statistics, big data analysis and background recording. The content of the big data analysis may include vehicle self-inspection diagnosis, vehicle acceleration Performance and braking performance analysis, personal driving habits analysis, etc. The terminal 3 may include a background server or a mobile terminal 3 such as a mobile phone. When the terminal 3 is a mobile terminal, the main processor 2 can also send the OBD information to the mobile terminal, and perform real-time display, vehicle diagnosis, fault code removal, and 100-kilometer acceleration and deceleration performance tests through the mobile terminal APP. It can be understood that there are various schemes for analyzing and diagnosing the state of the vehicle through the OBD information, and how to analyze and diagnose is not the focus of the protection of the present application.

A power management module 4 that is connected to the main processor 2 and used to control the shutdown of the corresponding functional module after receiving the trigger instruction.

Specifically, the power management module 4 is connected to the main processor 2 in order to receive the trigger instruction sent by the main processor 2. Referring to the above, when the power management module 4 receives the first trigger instruction, the control part of the functional module is turned off, When the power management module 4 receives the second trigger instruction, it controls all functional modules to be turned off, so as to reduce the power consumption of the remote monitoring device and prevent the remote monitoring device from excessively consuming battery energy and causing battery feeding.

The present application provides an OBD-based remote monitoring device, comprising: an acquisition module connected to an OBD interface of a vehicle and used to acquire OBD information of the vehicle, wherein the OBD information includes battery voltage; The information is sent to the terminal through the GPRS module, and the main processor is also used to generate corresponding trigger commands according to the battery voltage; the terminal is connected to the main processor and used for diagnosing the state of the vehicle according to the OBD information; and the main processor Connect to the power management module used to control the shutdown of the corresponding function module after receiving the trigger instruction.

It can be seen that in practical applications, the solution of the present application is adopted, the battery voltage of the vehicle is obtained through the acquisition module, the main processor generates the corresponding trigger command according to the size of the battery voltage, and the power management module controls the corresponding function module after receiving the trigger command. Turn off, so that the remote monitoring device provided by this application operates in a low power consumption mode, which can prevent the battery from feeding power due to the vehicle not being started for a long time, thereby causing the vehicle to fail to start, and improve the reliability and safety of the remote monitoring device. sex.

Please refer to FIG. 2. FIG. 2 is a schematic structural diagram of another OBD-based remote monitoring device provided by the application. The remote monitoring device is based on the above-mentioned embodiment:

As a preferred embodiment, the remote monitoring device further includes:

A GPS module 5 connected to the main processor 2 for acquiring GPS positioning data.

Specifically, the GPS (Global Positioning System, global positioning system) module 5 is connected to the main processor 2 through UART, so that the GPS module 5 sends the acquired GPS positioning data of the vehicle to the main processor 2, and the main processor 2 uses GPRS The module sends the GPS positioning data to the terminal 3, and the terminal 3 can analyze the vehicle activity area and personal driving habits according to the received GPS positioning data.

Among them, the GPS module 5 can be selected from ATGM332D, and the alternative solution is the Beidou/GPS module 5 such as ATK1218-BD, which is not limited in this application.

As a preferred embodiment, the remote monitoring device further includes:

The Bluetooth module 6 connected with the main processor 2 and the FM module 7 respectively;

The FM module 7 is connected to the main processor 2 and the vehicle audio system respectively.

As a preferred embodiment, the FM module 7 includes a PAM8908 chip and a QN8027 chip connected to the PAM8908 chip.

Specifically, the remote monitoring device provided by the present application further includes a Bluetooth module 6 and an FM module 7. The Bluetooth module 6 is connected to the main processor 2 through UART, and the FM (Frequency Modulation, frequency modulation) module 7 is connected to the main processor 2 through I2C. connected, the main processor 2 can also send the GPS positioning data and OBD information to the mobile phone APP through the Bluetooth module 6 . In addition, the present application can also send the audio information in the mobile phone or other multimedia devices with Bluetooth function to the FM module 7 in the form of Bluetooth signals through the Bluetooth module, and adjust the vehicle audio system (specifically including the radio) to the corresponding frequency, The audio information in the mobile phone or multimedia device can be played through the car audio. It can be understood that the remote monitoring device provided by this application can make up for the disadvantage that some car models do not have the function of Bluetooth telephone, and users can send calls to the vehicle audio system through the Bluetooth module 6 and the FM module 7, without the need for The user holds the mobile phone to make a call, which improves the driving safety.

Specifically, the Bluetooth module 6 can use a BK8000L series Bluetooth module compatible with voice and data, which is used to receive audio information and communicate with the main processor 2 to transmit real-time data to the mobile phone APP. The FM module 7 can use PAM8908 as an audio amplifier chip, amplify the audio signal and send it to the FM transmitter chip QN8027.

As a preferred embodiment, the remote monitoring device further includes:

The vibration module 8 connected to the main processor 2 is used to collect vibration data of the vehicle after the vehicle is parked.

As a preferred embodiment, the vibration module 8 includes an LSM303 chip.

Specifically, the vibration module 8 and the main processor 2 are connected through I2C. The vibration module 8 can use the LSM303 chip, which integrates the electronic compass and the acceleration sensor. When the vehicle enters the garage and other places without GPS signals, the electronic compass The information such as the direction, speed and driving time of the vehicle is sent to the terminal 3 through the GPRS module. If someone prys the door or steals the vehicle and causes the body to vibrate, the main processor 2 immediately sends an alarm message to the terminal 3 through the GPRS module.

It can be understood that when the battery voltage is less than the first preset value, the power management module 4 controls all functional modules except the vibration module 8 to turn off, and when the battery voltage is less than the second preset value, the power management module 4 controls the vibration module. 8 off, where the second preset value can be set to 11.6V.

Of course, the first preset value and the second preset value need to be set according to actual engineering needs, which are not limited in this application.

As a preferred embodiment, the remote monitoring device further includes:

Display for displaying diagnostic results, OBD information, GPS positioning data.

Specifically, the present application further includes a display for displaying the diagnosis result, OBD information, GPS positioning data and alarm information in real time, which is convenient for users to view.

To sum up, the OBD remote monitoring device based on the Internet of Vehicles provided by this application combines the existing OBD diagnosis function with GPS positioning information, and transmits real-time vehicle body data (OBD information) and GPS positioning data in real time through the GPRS module. Go to the backend server, perform statistics and real-time analysis on the current real-time data on the backend server, or send the real-time data to the mobile phone APP through the Bluetooth module for real-time display, vehicle diagnosis, fault code removal, and 100-kilometer acceleration and deceleration performance tests. . The OBD-based remote monitoring device provided by this application also adds the FM transmission function, which can send the audio information in the mobile phone and the multimedia device with the Bluetooth function to the FM transmission module through the Bluetooth signal, and adjust the car radio to the corresponding At the same time, the remote monitoring device provided by this application can enter a low power consumption mode with a power consumption of uA level, and can fully enter the power consumption mode when the vehicle is not started. The low-power standby mode prevents the battery from being fed due to the vehicle not being started for a long time, thus causing the vehicle to fail to start.

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments can be referred to each other.

The above description of the disclosed embodiments enables any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, this application is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. a kind of remote monitoring device based on OBD, is characterized in that, comprises: an acquisition module connected to the OBD interface of the vehicle for acquiring the OBD information of the vehicle, wherein the OBD information includes the battery voltage; a main processor connected with the acquisition module, used for sending the OBD information to the terminal through the GPRS module, and also used for generating a corresponding trigger instruction according to the battery voltage; the terminal connected to the main processor for diagnosing the state of the vehicle according to the OBD information; A power management module connected to the main processor and configured to control the shutdown of the corresponding function module after receiving the trigger instruction. 2. The remote monitoring device according to claim 1, wherein the remote monitoring device further comprises: A GPS module connected to the main processor for acquiring GPS positioning data. 3. The remote monitoring device according to claim 2, wherein the remote monitoring device further comprises: a Bluetooth module connected to the main processor and the FM module respectively; The FM modules are respectively connected with the main processor and the vehicle audio system. 4. The remote monitoring device according to claim 3, wherein the remote monitoring device further comprises: A vibration module connected to the main processor is used to collect vibration data of the vehicle after the vehicle is parked. 5. The remote monitoring device according to claim 4, wherein the remote monitoring device further comprises: A display for displaying diagnostic results, the OBD information, and the GPS positioning data. 6. The remote monitoring device according to any one of claims 1-5, wherein the terminal comprises a background server and/or a mobile terminal. 7. The remote monitoring device according to claim 5, wherein the main processor is connected with the Bluetooth module, the acquisition module, the GPRS module, and the GPS module through UART; The main processor is connected to the FM module and the vibration module through I2C. 8. The remote monitoring device according to claim 5, wherein the main processor comprises STM32F105VCT6. 9 . The remote monitoring device according to claim 5 , wherein the vibration module comprises an LSM303 chip. 10 . 10 . The remote monitoring device according to claim 5 , wherein the FM module comprises a PAM8908 chip and a QN8027 chip connected to the PAM8908 chip. 11 .